I believe its from the ASHREA Fundamentals handbook. I you take the general equation based on Gr & Pr numbers, and insert fluid properties for air at 14.7 psia, the equation reduces to the above.
Cooling the air will work, but it requires an active control scheme and electric power. A power outage on a hot day could lead to a lot of ruined wine, unless of course he calls all his friends over to drink it up before it is subject to the high temperature.
The best way to eliminate...
superheat,
The temperature of the air in the attic does not affect the performance of the radiant barrier. At low temperatures, below 1000F, the absorptivity and emissivity of the air can be neglected. What you need be concerned with is the temperature of the surfaces involved, in this case...
Pete,
Perhaps a little selfishness is what this profession needs. In my experience companies tend to see engineers as interchangeable cogs. Any fifty are just as good as any other fifty, so lets hire the cheapest ones we can find. Its funny, but this logic doesn't appear to apply to CEOs...
Sad but True,
A fellow engineer that I worked with a few years ago confided that his teenage son was trying to decide whether to go to engineering school or become a musician. When his son asked for his advice, he had to truthfully tell him that joining a rock band was probably the more stable...
Folks,
I think we are missing the point here. If we want to be treated like professionals we need to start acting like we are. In my opinion, universal registration, elimination of the industry exception, and legally restricting the use of the term "Engineer", would go a long way...
Let's face it, given where the "profession" is going I would have a hard time recommending engineering to anyone. Until we begin to receive the status and respect normally accorded to professionals, most undergraduate engineering programs are going to be populated by people who don't...
